PC32: DCF77 Computer Clock (ISA bus)
Key Features
- IBM PC/XT/AT Interface
- Pulses per second and per minute
- Periodic interrupts
- RS-232 interface
- Reception status indicated by LED
- Buffered hardware clock
- Settable Base Address
- Driver software for all popular operating systems
Product Description
Characteristics
Receiver Type | Narrowband synchronous receiver with automatic gain control, Bandwidth: approx. 40Hz |
Status Indicators |
RF Signal: Indicated by LED
Antenna alignment enhanced by utility program Free Running: Indicated by LED and utility program Without RF signal the clock runs on XTAL with an accuracy of ±1·10-6 (after 24 hours of synchronous operation) Modulation: Indicated by LED and utility program |
Type of Antenna | DCF77 indoor antenna AI01 |
Accuracy free run | Accuracy of the quartz base after min. 24hrs of synchronized operation: ±1·10-6 |
Reception Monitoring | Incoming time string undergoes multiple checks
Plausibility test using two full consecutive time strings |
Interface | Single serial RS-232 interface |
Data format PC interface | Binary, byte serial |
Serial Time String Output | Baudrate: 300, 600, 1200, 2400, 4800, 9600 Baud Framing: 7E2, 8N1, 8E1, 8N2 Output string: 32 ASCII characters with date, time and status information |
Statusbyte | Informations about free running mode, daylight savings time and DST pre-switch anouncement, synchronization since last reset, GMT/UTC time and validity of the hardware clock data |
Electrical Connectors | 9 pin sub D male connector BNC female connector |
Computer interface | IBM PC/XT/AT-Bus |
Backup Battery Type | In case of supply voltage failure the on-board RTC keeps the time based on XTAL for more than 150 hours (buffer capacitor) Optional: lithium backup battery (life time: 10 years) |
Operating Voltage | +5 V DC |
Current Draw | ca. 80mA |
Board type | 8 bit short expansion board |
Supported Temperature | Operational: 0 - 50 °C (32 - 122 °F)
Storage: -20 - 70 °C (-4 - 158 °F) |
Supported Humidity | Max. 85 % (non-condensing) at 40 °C |
Options | Pulse per second and pulse per minute (TTL level) |
Downloads
Short Info Sheet
Manuals
Please note that only the most recent manual version is available for download. This manual therefore may not be suitable for all product versions.
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